1 /* 2 * wpa_supplicant / WPS integration 3 * Copyright (c) 2008-2014, Jouni Malinen <j (at) w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "includes.h" 10 11 #include "common.h" 12 #include "eloop.h" 13 #include "uuid.h" 14 #include "crypto/random.h" 15 #include "crypto/dh_group5.h" 16 #include "common/ieee802_11_defs.h" 17 #include "common/ieee802_11_common.h" 18 #include "common/wpa_common.h" 19 #include "common/wpa_ctrl.h" 20 #include "eap_common/eap_wsc_common.h" 21 #include "eap_peer/eap.h" 22 #include "eapol_supp/eapol_supp_sm.h" 23 #include "rsn_supp/wpa.h" 24 #include "wps/wps_attr_parse.h" 25 #include "config.h" 26 #include "wpa_supplicant_i.h" 27 #include "driver_i.h" 28 #include "notify.h" 29 #include "blacklist.h" 30 #include "bss.h" 31 #include "scan.h" 32 #include "ap.h" 33 #include "p2p/p2p.h" 34 #include "p2p_supplicant.h" 35 #include "wps_supplicant.h" 36 37 38 #ifndef WPS_PIN_SCAN_IGNORE_SEL_REG 39 #define WPS_PIN_SCAN_IGNORE_SEL_REG 3 40 #endif /* WPS_PIN_SCAN_IGNORE_SEL_REG */ 41 42 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx); 43 static void wpas_clear_wps(struct wpa_supplicant *wpa_s); 44 45 46 static void wpas_wps_clear_ap_info(struct wpa_supplicant *wpa_s) 47 { 48 os_free(wpa_s->wps_ap); 49 wpa_s->wps_ap = NULL; 50 wpa_s->num_wps_ap = 0; 51 wpa_s->wps_ap_iter = 0; 52 } 53 54 55 static void wpas_wps_assoc_with_cred(void *eloop_ctx, void *timeout_ctx) 56 { 57 struct wpa_supplicant *wpa_s = eloop_ctx; 58 int use_fast_assoc = timeout_ctx != NULL; 59 60 wpa_printf(MSG_DEBUG, "WPS: Continuing association after eapol_cb"); 61 if (!use_fast_assoc || 62 wpa_supplicant_fast_associate(wpa_s) != 1) 63 wpa_supplicant_req_scan(wpa_s, 0, 0); 64 } 65 66 67 static void wpas_wps_assoc_with_cred_cancel(struct wpa_supplicant *wpa_s) 68 { 69 eloop_cancel_timeout(wpas_wps_assoc_with_cred, wpa_s, (void *) 0); 70 eloop_cancel_timeout(wpas_wps_assoc_with_cred, wpa_s, (void *) 1); 71 } 72 73 74 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s) 75 { 76 if (wpas_p2p_wps_eapol_cb(wpa_s) > 0) 77 return 1; 78 79 if (!wpa_s->wps_success && 80 wpa_s->current_ssid && 81 eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) { 82 const u8 *bssid = wpa_s->bssid; 83 if (is_zero_ether_addr(bssid)) 84 bssid = wpa_s->pending_bssid; 85 86 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR 87 " did not succeed - continue trying to find " 88 "suitable AP", MAC2STR(bssid)); 89 wpa_blacklist_add(wpa_s, bssid); 90 91 wpa_supplicant_deauthenticate(wpa_s, 92 WLAN_REASON_DEAUTH_LEAVING); 93 wpa_s->reassociate = 1; 94 wpa_supplicant_req_scan(wpa_s, 95 wpa_s->blacklist_cleared ? 5 : 0, 0); 96 wpa_s->blacklist_cleared = 0; 97 return 1; 98 } 99 100 wpas_wps_clear_ap_info(wpa_s); 101 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL); 102 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && !wpa_s->wps_success) 103 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL); 104 105 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid && 106 !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { 107 int disabled = wpa_s->current_ssid->disabled; 108 unsigned int freq = wpa_s->assoc_freq; 109 struct wpa_bss *bss; 110 struct wpa_ssid *ssid = NULL; 111 int use_fast_assoc = 0; 112 113 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - " 114 "try to associate with the received credential " 115 "(freq=%u)", freq); 116 wpa_supplicant_deauthenticate(wpa_s, 117 WLAN_REASON_DEAUTH_LEAVING); 118 if (disabled) { 119 wpa_printf(MSG_DEBUG, "WPS: Current network is " 120 "disabled - wait for user to enable"); 121 return 1; 122 } 123 wpa_s->after_wps = 5; 124 wpa_s->wps_freq = freq; 125 wpa_s->normal_scans = 0; 126 wpa_s->reassociate = 1; 127 128 wpa_printf(MSG_DEBUG, "WPS: Checking whether fast association " 129 "without a new scan can be used"); 130 bss = wpa_supplicant_pick_network(wpa_s, &ssid); 131 if (bss) { 132 struct wpabuf *wps; 133 struct wps_parse_attr attr; 134 135 wps = wpa_bss_get_vendor_ie_multi(bss, 136 WPS_IE_VENDOR_TYPE); 137 if (wps && wps_parse_msg(wps, &attr) == 0 && 138 attr.wps_state && 139 *attr.wps_state == WPS_STATE_CONFIGURED) 140 use_fast_assoc = 1; 141 wpabuf_free(wps); 142 } 143 144 /* 145 * Complete the next step from an eloop timeout to allow pending 146 * driver events related to the disconnection to be processed 147 * first. This makes it less likely for disconnection event to 148 * cause problems with the following connection. 149 */ 150 wpa_printf(MSG_DEBUG, "WPS: Continue association from timeout"); 151 wpas_wps_assoc_with_cred_cancel(wpa_s); 152 eloop_register_timeout(0, 10000, 153 wpas_wps_assoc_with_cred, wpa_s, 154 use_fast_assoc ? (void *) 1 : 155 (void *) 0); 156 return 1; 157 } 158 159 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) { 160 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting " 161 "for external credential processing"); 162 wpas_clear_wps(wpa_s); 163 wpa_supplicant_deauthenticate(wpa_s, 164 WLAN_REASON_DEAUTH_LEAVING); 165 return 1; 166 } 167 168 return 0; 169 } 170 171 172 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s, 173 struct wpa_ssid *ssid, 174 const struct wps_credential *cred) 175 { 176 struct wpa_driver_capa capa; 177 struct wpa_bss *bss; 178 const u8 *ie; 179 struct wpa_ie_data adv; 180 int wpa2 = 0, ccmp = 0; 181 182 /* 183 * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in 184 * case they are configured for mixed mode operation (WPA+WPA2 and 185 * TKIP+CCMP). Try to use scan results to figure out whether the AP 186 * actually supports stronger security and select that if the client 187 * has support for it, too. 188 */ 189 190 if (wpa_drv_get_capa(wpa_s, &capa)) 191 return; /* Unknown what driver supports */ 192 193 if (ssid->ssid == NULL) 194 return; 195 bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len); 196 if (bss == NULL) { 197 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS " 198 "table - use credential as-is"); 199 return; 200 } 201 202 wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table"); 203 204 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN); 205 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) { 206 wpa2 = 1; 207 if (adv.pairwise_cipher & WPA_CIPHER_CCMP) 208 ccmp = 1; 209 } else { 210 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); 211 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 && 212 adv.pairwise_cipher & WPA_CIPHER_CCMP) 213 ccmp = 1; 214 } 215 216 if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) && 217 (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) { 218 /* 219 * TODO: This could be the initial AP configuration and the 220 * Beacon contents could change shortly. Should request a new 221 * scan and delay addition of the network until the updated 222 * scan results are available. 223 */ 224 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA " 225 "support - use credential as-is"); 226 return; 227 } 228 229 if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) && 230 (ssid->pairwise_cipher & WPA_CIPHER_TKIP) && 231 (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) { 232 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential " 233 "based on scan results"); 234 if (wpa_s->conf->ap_scan == 1) 235 ssid->pairwise_cipher |= WPA_CIPHER_CCMP; 236 else 237 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 238 } 239 240 if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) && 241 (ssid->proto & WPA_PROTO_WPA) && 242 (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) { 243 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential " 244 "based on scan results"); 245 if (wpa_s->conf->ap_scan == 1) 246 ssid->proto |= WPA_PROTO_RSN; 247 else 248 ssid->proto = WPA_PROTO_RSN; 249 } 250 } 251 252 253 static void wpas_wps_remove_dup_network(struct wpa_supplicant *wpa_s, 254 struct wpa_ssid *new_ssid) 255 { 256 struct wpa_ssid *ssid, *next; 257 258 for (ssid = wpa_s->conf->ssid, next = ssid ? ssid->next : NULL; ssid; 259 ssid = next, next = ssid ? ssid->next : NULL) { 260 /* 261 * new_ssid has already been added to the list in 262 * wpas_wps_add_network(), so skip it. 263 */ 264 if (ssid == new_ssid) 265 continue; 266 267 if (ssid->bssid_set || new_ssid->bssid_set) { 268 if (ssid->bssid_set != new_ssid->bssid_set) 269 continue; 270 if (os_memcmp(ssid->bssid, new_ssid->bssid, ETH_ALEN) != 271 0) 272 continue; 273 } 274 275 /* compare SSID */ 276 if (ssid->ssid_len == 0 || ssid->ssid_len != new_ssid->ssid_len) 277 continue; 278 279 if (ssid->ssid && new_ssid->ssid) { 280 if (os_memcmp(ssid->ssid, new_ssid->ssid, 281 ssid->ssid_len) != 0) 282 continue; 283 } else if (ssid->ssid || new_ssid->ssid) 284 continue; 285 286 /* compare security parameters */ 287 if (ssid->auth_alg != new_ssid->auth_alg || 288 ssid->key_mgmt != new_ssid->key_mgmt || 289 ssid->proto != new_ssid->proto || 290 ssid->pairwise_cipher != new_ssid->pairwise_cipher || 291 ssid->group_cipher != new_ssid->group_cipher) 292 continue; 293 294 /* Remove the duplicated older network entry. */ 295 wpa_printf(MSG_DEBUG, "Remove duplicate network %d", ssid->id); 296 wpas_notify_network_removed(wpa_s, ssid); 297 wpa_config_remove_network(wpa_s->conf, ssid->id); 298 } 299 } 300 301 302 static int wpa_supplicant_wps_cred(void *ctx, 303 const struct wps_credential *cred) 304 { 305 struct wpa_supplicant *wpa_s = ctx; 306 struct wpa_ssid *ssid = wpa_s->current_ssid; 307 u16 auth_type; 308 #ifdef CONFIG_WPS_REG_DISABLE_OPEN 309 int registrar = 0; 310 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */ 311 312 if ((wpa_s->conf->wps_cred_processing == 1 || 313 wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) { 314 size_t blen = cred->cred_attr_len * 2 + 1; 315 char *buf = os_malloc(blen); 316 if (buf) { 317 wpa_snprintf_hex(buf, blen, 318 cred->cred_attr, cred->cred_attr_len); 319 wpa_msg(wpa_s, MSG_INFO, "%s%s", 320 WPS_EVENT_CRED_RECEIVED, buf); 321 os_free(buf); 322 } 323 324 wpas_notify_wps_credential(wpa_s, cred); 325 } else 326 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED); 327 328 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute", 329 cred->cred_attr, cred->cred_attr_len); 330 331 if (wpa_s->conf->wps_cred_processing == 1) 332 return 0; 333 334 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len); 335 wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x", 336 cred->auth_type); 337 wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type); 338 wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx); 339 wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key", 340 cred->key, cred->key_len); 341 wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR, 342 MAC2STR(cred->mac_addr)); 343 344 auth_type = cred->auth_type; 345 if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) { 346 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode " 347 "auth_type into WPA2PSK"); 348 auth_type = WPS_AUTH_WPA2PSK; 349 } 350 351 if (auth_type != WPS_AUTH_OPEN && 352 auth_type != WPS_AUTH_WPAPSK && 353 auth_type != WPS_AUTH_WPA2PSK) { 354 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for " 355 "unsupported authentication type 0x%x", 356 auth_type); 357 return 0; 358 } 359 360 if (auth_type == WPS_AUTH_WPAPSK || auth_type == WPS_AUTH_WPA2PSK) { 361 if (cred->key_len < 8 || cred->key_len > 2 * PMK_LEN) { 362 wpa_printf(MSG_ERROR, "WPS: Reject PSK credential with " 363 "invalid Network Key length %lu", 364 (unsigned long) cred->key_len); 365 return -1; 366 } 367 } 368 369 if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { 370 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based " 371 "on the received credential"); 372 #ifdef CONFIG_WPS_REG_DISABLE_OPEN 373 if (ssid->eap.identity && 374 ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN && 375 os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR, 376 WSC_ID_REGISTRAR_LEN) == 0) 377 registrar = 1; 378 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */ 379 os_free(ssid->eap.identity); 380 ssid->eap.identity = NULL; 381 ssid->eap.identity_len = 0; 382 os_free(ssid->eap.phase1); 383 ssid->eap.phase1 = NULL; 384 os_free(ssid->eap.eap_methods); 385 ssid->eap.eap_methods = NULL; 386 if (!ssid->p2p_group) { 387 ssid->temporary = 0; 388 ssid->bssid_set = 0; 389 } 390 ssid->disabled_until.sec = 0; 391 ssid->disabled_until.usec = 0; 392 ssid->auth_failures = 0; 393 } else { 394 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the " 395 "received credential"); 396 ssid = wpa_config_add_network(wpa_s->conf); 397 if (ssid == NULL) 398 return -1; 399 if (wpa_s->current_ssid) { 400 /* 401 * Should the GO issue multiple credentials for some 402 * reason, each credential should be marked as a 403 * temporary P2P group similarly to the one that gets 404 * marked as such based on the pre-configured values 405 * used for the WPS network block. 406 */ 407 ssid->p2p_group = wpa_s->current_ssid->p2p_group; 408 ssid->temporary = wpa_s->current_ssid->temporary; 409 } 410 wpas_notify_network_added(wpa_s, ssid); 411 } 412 413 wpa_config_set_network_defaults(ssid); 414 415 os_free(ssid->ssid); 416 ssid->ssid = os_malloc(cred->ssid_len); 417 if (ssid->ssid) { 418 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len); 419 ssid->ssid_len = cred->ssid_len; 420 } 421 422 switch (cred->encr_type) { 423 case WPS_ENCR_NONE: 424 break; 425 case WPS_ENCR_TKIP: 426 ssid->pairwise_cipher = WPA_CIPHER_TKIP; 427 break; 428 case WPS_ENCR_AES: 429 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 430 break; 431 } 432 433 switch (auth_type) { 434 case WPS_AUTH_OPEN: 435 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 436 ssid->key_mgmt = WPA_KEY_MGMT_NONE; 437 ssid->proto = 0; 438 #ifdef CONFIG_WPS_REG_DISABLE_OPEN 439 if (registrar) { 440 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK 441 "id=%d - Credentials for an open " 442 "network disabled by default - use " 443 "'select_network %d' to enable", 444 ssid->id, ssid->id); 445 ssid->disabled = 1; 446 } 447 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */ 448 break; 449 case WPS_AUTH_WPAPSK: 450 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 451 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 452 ssid->proto = WPA_PROTO_WPA; 453 break; 454 case WPS_AUTH_WPA2PSK: 455 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 456 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 457 ssid->proto = WPA_PROTO_RSN; 458 break; 459 } 460 461 if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) { 462 if (cred->key_len == 2 * PMK_LEN) { 463 if (hexstr2bin((const char *) cred->key, ssid->psk, 464 PMK_LEN)) { 465 wpa_printf(MSG_ERROR, "WPS: Invalid Network " 466 "Key"); 467 return -1; 468 } 469 ssid->psk_set = 1; 470 ssid->export_keys = 1; 471 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) { 472 os_free(ssid->passphrase); 473 ssid->passphrase = os_malloc(cred->key_len + 1); 474 if (ssid->passphrase == NULL) 475 return -1; 476 os_memcpy(ssid->passphrase, cred->key, cred->key_len); 477 ssid->passphrase[cred->key_len] = '\0'; 478 wpa_config_update_psk(ssid); 479 ssid->export_keys = 1; 480 } else { 481 wpa_printf(MSG_ERROR, "WPS: Invalid Network Key " 482 "length %lu", 483 (unsigned long) cred->key_len); 484 return -1; 485 } 486 } 487 488 wpas_wps_security_workaround(wpa_s, ssid, cred); 489 490 wpas_wps_remove_dup_network(wpa_s, ssid); 491 492 #ifndef CONFIG_NO_CONFIG_WRITE 493 if (wpa_s->conf->update_config && 494 wpa_config_write(wpa_s->confname, wpa_s->conf)) { 495 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration"); 496 return -1; 497 } 498 #endif /* CONFIG_NO_CONFIG_WRITE */ 499 500 /* 501 * Optimize the post-WPS scan based on the channel used during 502 * the provisioning in case EAP-Failure is not received. 503 */ 504 wpa_s->after_wps = 5; 505 wpa_s->wps_freq = wpa_s->assoc_freq; 506 507 return 0; 508 } 509 510 511 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s, 512 struct wps_event_m2d *m2d) 513 { 514 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D 515 "dev_password_id=%d config_error=%d", 516 m2d->dev_password_id, m2d->config_error); 517 wpas_notify_wps_event_m2d(wpa_s, m2d); 518 #ifdef CONFIG_P2P 519 if (wpa_s->parent && wpa_s->parent != wpa_s) { 520 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D 521 "dev_password_id=%d config_error=%d", 522 m2d->dev_password_id, m2d->config_error); 523 } 524 if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) { 525 /* 526 * Notify P2P from eloop timeout to avoid issues with the 527 * interface getting removed while processing a message. 528 */ 529 eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb, wpa_s, 530 NULL); 531 } 532 #endif /* CONFIG_P2P */ 533 } 534 535 536 static void wpas_wps_clear_timeout(void *eloop_ctx, void *timeout_ctx) 537 { 538 struct wpa_supplicant *wpa_s = eloop_ctx; 539 wpa_printf(MSG_DEBUG, "WPS: Clear WPS network from timeout"); 540 wpas_clear_wps(wpa_s); 541 } 542 543 544 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s, 545 struct wps_event_fail *fail) 546 { 547 if (fail->error_indication > 0 && 548 fail->error_indication < NUM_WPS_EI_VALUES) { 549 wpa_msg(wpa_s, MSG_INFO, 550 WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)", 551 fail->msg, fail->config_error, fail->error_indication, 552 wps_ei_str(fail->error_indication)); 553 if (wpa_s->parent && wpa_s->parent != wpa_s) 554 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL 555 "msg=%d config_error=%d reason=%d (%s)", 556 fail->msg, fail->config_error, 557 fail->error_indication, 558 wps_ei_str(fail->error_indication)); 559 } else { 560 wpa_msg(wpa_s, MSG_INFO, 561 WPS_EVENT_FAIL "msg=%d config_error=%d", 562 fail->msg, fail->config_error); 563 if (wpa_s->parent && wpa_s->parent != wpa_s) 564 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL 565 "msg=%d config_error=%d", 566 fail->msg, fail->config_error); 567 } 568 569 /* 570 * Need to allow WPS processing to complete, e.g., by sending WSC_NACK. 571 */ 572 wpa_printf(MSG_DEBUG, "WPS: Register timeout to clear WPS network"); 573 eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL); 574 eloop_register_timeout(0, 100000, wpas_wps_clear_timeout, wpa_s, NULL); 575 576 wpas_notify_wps_event_fail(wpa_s, fail); 577 wpas_p2p_wps_failed(wpa_s, fail); 578 } 579 580 581 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx); 582 583 static void wpas_wps_reenable_networks(struct wpa_supplicant *wpa_s) 584 { 585 struct wpa_ssid *ssid; 586 int changed = 0; 587 588 eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL); 589 590 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 591 if (ssid->disabled_for_connect && ssid->disabled) { 592 ssid->disabled_for_connect = 0; 593 ssid->disabled = 0; 594 wpas_notify_network_enabled_changed(wpa_s, ssid); 595 changed++; 596 } 597 } 598 599 if (changed) { 600 #ifndef CONFIG_NO_CONFIG_WRITE 601 if (wpa_s->conf->update_config && 602 wpa_config_write(wpa_s->confname, wpa_s->conf)) { 603 wpa_printf(MSG_DEBUG, "WPS: Failed to update " 604 "configuration"); 605 } 606 #endif /* CONFIG_NO_CONFIG_WRITE */ 607 } 608 } 609 610 611 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx) 612 { 613 struct wpa_supplicant *wpa_s = eloop_ctx; 614 /* Enable the networks disabled during wpas_wps_reassoc */ 615 wpas_wps_reenable_networks(wpa_s); 616 } 617 618 619 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s) 620 { 621 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS); 622 wpa_s->wps_success = 1; 623 wpas_notify_wps_event_success(wpa_s); 624 if (wpa_s->current_ssid) 625 wpas_clear_temp_disabled(wpa_s, wpa_s->current_ssid, 1); 626 wpa_s->extra_blacklist_count = 0; 627 628 /* 629 * Enable the networks disabled during wpas_wps_reassoc after 10 630 * seconds. The 10 seconds timer is to allow the data connection to be 631 * formed before allowing other networks to be selected. 632 */ 633 eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s, 634 NULL); 635 636 wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0); 637 } 638 639 640 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s, 641 struct wps_event_er_ap *ap) 642 { 643 char uuid_str[100]; 644 char dev_type[WPS_DEV_TYPE_BUFSIZE]; 645 646 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str)); 647 if (ap->pri_dev_type) 648 wps_dev_type_bin2str(ap->pri_dev_type, dev_type, 649 sizeof(dev_type)); 650 else 651 dev_type[0] = '\0'; 652 653 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR 654 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|", 655 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state, 656 ap->friendly_name ? ap->friendly_name : "", 657 ap->manufacturer ? ap->manufacturer : "", 658 ap->model_description ? ap->model_description : "", 659 ap->model_name ? ap->model_name : "", 660 ap->manufacturer_url ? ap->manufacturer_url : "", 661 ap->model_url ? ap->model_url : ""); 662 } 663 664 665 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s, 666 struct wps_event_er_ap *ap) 667 { 668 char uuid_str[100]; 669 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str)); 670 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str); 671 } 672 673 674 static void wpa_supplicant_wps_event_er_enrollee_add( 675 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee) 676 { 677 char uuid_str[100]; 678 char dev_type[WPS_DEV_TYPE_BUFSIZE]; 679 680 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str)); 681 if (enrollee->pri_dev_type) 682 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type, 683 sizeof(dev_type)); 684 else 685 dev_type[0] = '\0'; 686 687 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR 688 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s " 689 "|%s|%s|%s|%s|%s|", 690 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received, 691 enrollee->config_methods, enrollee->dev_passwd_id, dev_type, 692 enrollee->dev_name ? enrollee->dev_name : "", 693 enrollee->manufacturer ? enrollee->manufacturer : "", 694 enrollee->model_name ? enrollee->model_name : "", 695 enrollee->model_number ? enrollee->model_number : "", 696 enrollee->serial_number ? enrollee->serial_number : ""); 697 } 698 699 700 static void wpa_supplicant_wps_event_er_enrollee_remove( 701 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee) 702 { 703 char uuid_str[100]; 704 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str)); 705 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR, 706 uuid_str, MAC2STR(enrollee->mac_addr)); 707 } 708 709 710 static void wpa_supplicant_wps_event_er_ap_settings( 711 struct wpa_supplicant *wpa_s, 712 struct wps_event_er_ap_settings *ap_settings) 713 { 714 char uuid_str[100]; 715 char key_str[65]; 716 const struct wps_credential *cred = ap_settings->cred; 717 718 key_str[0] = '\0'; 719 if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) { 720 if (cred->key_len >= 8 && cred->key_len <= 64) { 721 os_memcpy(key_str, cred->key, cred->key_len); 722 key_str[cred->key_len] = '\0'; 723 } 724 } 725 726 uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str)); 727 /* Use wpa_msg_ctrl to avoid showing the key in debug log */ 728 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS 729 "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x " 730 "key=%s", 731 uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len), 732 cred->auth_type, cred->encr_type, key_str); 733 } 734 735 736 static void wpa_supplicant_wps_event_er_set_sel_reg( 737 struct wpa_supplicant *wpa_s, 738 struct wps_event_er_set_selected_registrar *ev) 739 { 740 char uuid_str[100]; 741 742 uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str)); 743 switch (ev->state) { 744 case WPS_ER_SET_SEL_REG_START: 745 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG 746 "uuid=%s state=START sel_reg=%d dev_passwd_id=%u " 747 "sel_reg_config_methods=0x%x", 748 uuid_str, ev->sel_reg, ev->dev_passwd_id, 749 ev->sel_reg_config_methods); 750 break; 751 case WPS_ER_SET_SEL_REG_DONE: 752 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG 753 "uuid=%s state=DONE", uuid_str); 754 break; 755 case WPS_ER_SET_SEL_REG_FAILED: 756 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG 757 "uuid=%s state=FAILED", uuid_str); 758 break; 759 } 760 } 761 762 763 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event, 764 union wps_event_data *data) 765 { 766 struct wpa_supplicant *wpa_s = ctx; 767 switch (event) { 768 case WPS_EV_M2D: 769 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d); 770 break; 771 case WPS_EV_FAIL: 772 wpa_supplicant_wps_event_fail(wpa_s, &data->fail); 773 break; 774 case WPS_EV_SUCCESS: 775 wpa_supplicant_wps_event_success(wpa_s); 776 break; 777 case WPS_EV_PWD_AUTH_FAIL: 778 #ifdef CONFIG_AP 779 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee) 780 wpa_supplicant_ap_pwd_auth_fail(wpa_s); 781 #endif /* CONFIG_AP */ 782 break; 783 case WPS_EV_PBC_OVERLAP: 784 break; 785 case WPS_EV_PBC_TIMEOUT: 786 break; 787 case WPS_EV_PBC_ACTIVE: 788 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ACTIVE); 789 break; 790 case WPS_EV_PBC_DISABLE: 791 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_DISABLE); 792 break; 793 case WPS_EV_ER_AP_ADD: 794 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap); 795 break; 796 case WPS_EV_ER_AP_REMOVE: 797 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap); 798 break; 799 case WPS_EV_ER_ENROLLEE_ADD: 800 wpa_supplicant_wps_event_er_enrollee_add(wpa_s, 801 &data->enrollee); 802 break; 803 case WPS_EV_ER_ENROLLEE_REMOVE: 804 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s, 805 &data->enrollee); 806 break; 807 case WPS_EV_ER_AP_SETTINGS: 808 wpa_supplicant_wps_event_er_ap_settings(wpa_s, 809 &data->ap_settings); 810 break; 811 case WPS_EV_ER_SET_SELECTED_REGISTRAR: 812 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s, 813 &data->set_sel_reg); 814 break; 815 case WPS_EV_AP_PIN_SUCCESS: 816 break; 817 } 818 } 819 820 821 static int wpa_supplicant_wps_rf_band(void *ctx) 822 { 823 struct wpa_supplicant *wpa_s = ctx; 824 825 if (!wpa_s->current_ssid || !wpa_s->assoc_freq) 826 return 0; 827 828 return (wpa_s->assoc_freq > 2484) ? WPS_RF_50GHZ : WPS_RF_24GHZ; 829 } 830 831 832 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid) 833 { 834 if (eap_is_wps_pbc_enrollee(&ssid->eap) || 835 eap_is_wps_pin_enrollee(&ssid->eap)) 836 return WPS_REQ_ENROLLEE; 837 else 838 return WPS_REQ_REGISTRAR; 839 } 840 841 842 static void wpas_clear_wps(struct wpa_supplicant *wpa_s) 843 { 844 int id; 845 struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current; 846 847 wpa_s->after_wps = 0; 848 wpa_s->known_wps_freq = 0; 849 850 prev_current = wpa_s->current_ssid; 851 852 /* Enable the networks disabled during wpas_wps_reassoc */ 853 wpas_wps_reenable_networks(wpa_s); 854 855 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL); 856 eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL); 857 858 /* Remove any existing WPS network from configuration */ 859 ssid = wpa_s->conf->ssid; 860 while (ssid) { 861 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { 862 if (ssid == wpa_s->current_ssid) { 863 wpa_supplicant_deauthenticate( 864 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 865 } 866 id = ssid->id; 867 remove_ssid = ssid; 868 } else 869 id = -1; 870 ssid = ssid->next; 871 if (id >= 0) { 872 if (prev_current == remove_ssid) { 873 wpa_sm_set_config(wpa_s->wpa, NULL); 874 eapol_sm_notify_config(wpa_s->eapol, NULL, 875 NULL); 876 } 877 wpas_notify_network_removed(wpa_s, remove_ssid); 878 wpa_config_remove_network(wpa_s->conf, id); 879 } 880 } 881 882 wpas_wps_clear_ap_info(wpa_s); 883 } 884 885 886 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx) 887 { 888 struct wpa_supplicant *wpa_s = eloop_ctx; 889 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed " 890 "out"); 891 wpas_clear_wps(wpa_s); 892 } 893 894 895 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s, 896 int registrar, const u8 *dev_addr, 897 const u8 *bssid) 898 { 899 struct wpa_ssid *ssid; 900 901 ssid = wpa_config_add_network(wpa_s->conf); 902 if (ssid == NULL) 903 return NULL; 904 wpas_notify_network_added(wpa_s, ssid); 905 wpa_config_set_network_defaults(ssid); 906 ssid->temporary = 1; 907 if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 || 908 wpa_config_set(ssid, "eap", "WSC", 0) < 0 || 909 wpa_config_set(ssid, "identity", registrar ? 910 "\"" WSC_ID_REGISTRAR "\"" : 911 "\"" WSC_ID_ENROLLEE "\"", 0) < 0) { 912 wpas_notify_network_removed(wpa_s, ssid); 913 wpa_config_remove_network(wpa_s->conf, ssid->id); 914 return NULL; 915 } 916 917 #ifdef CONFIG_P2P 918 if (dev_addr) 919 os_memcpy(ssid->go_p2p_dev_addr, dev_addr, ETH_ALEN); 920 #endif /* CONFIG_P2P */ 921 922 if (bssid) { 923 #ifndef CONFIG_P2P 924 struct wpa_bss *bss; 925 int count = 0; 926 #endif /* CONFIG_P2P */ 927 928 os_memcpy(ssid->bssid, bssid, ETH_ALEN); 929 ssid->bssid_set = 1; 930 931 /* 932 * Note: With P2P, the SSID may change at the time the WPS 933 * provisioning is started, so better not filter the AP based 934 * on the current SSID in the scan results. 935 */ 936 #ifndef CONFIG_P2P 937 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 938 if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0) 939 continue; 940 941 os_free(ssid->ssid); 942 ssid->ssid = os_malloc(bss->ssid_len); 943 if (ssid->ssid == NULL) 944 break; 945 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len); 946 ssid->ssid_len = bss->ssid_len; 947 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from " 948 "scan results", 949 ssid->ssid, ssid->ssid_len); 950 count++; 951 } 952 953 if (count > 1) { 954 wpa_printf(MSG_DEBUG, "WPS: More than one SSID found " 955 "for the AP; use wildcard"); 956 os_free(ssid->ssid); 957 ssid->ssid = NULL; 958 ssid->ssid_len = 0; 959 } 960 #endif /* CONFIG_P2P */ 961 } 962 963 return ssid; 964 } 965 966 967 static void wpas_wps_temp_disable(struct wpa_supplicant *wpa_s, 968 struct wpa_ssid *selected) 969 { 970 struct wpa_ssid *ssid; 971 972 if (wpa_s->current_ssid) 973 wpa_supplicant_deauthenticate( 974 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 975 976 /* Mark all other networks disabled and trigger reassociation */ 977 ssid = wpa_s->conf->ssid; 978 while (ssid) { 979 int was_disabled = ssid->disabled; 980 ssid->disabled_for_connect = 0; 981 /* 982 * In case the network object corresponds to a persistent group 983 * then do not send out network disabled signal. In addition, 984 * do not change disabled status of persistent network objects 985 * from 2 to 1 should we connect to another network. 986 */ 987 if (was_disabled != 2) { 988 ssid->disabled = ssid != selected; 989 if (was_disabled != ssid->disabled) { 990 if (ssid->disabled) 991 ssid->disabled_for_connect = 1; 992 wpas_notify_network_enabled_changed(wpa_s, 993 ssid); 994 } 995 } 996 ssid = ssid->next; 997 } 998 } 999 1000 1001 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s, 1002 struct wpa_ssid *selected, const u8 *bssid, 1003 int freq) 1004 { 1005 struct wpa_bss *bss; 1006 1007 wpa_s->after_wps = 0; 1008 wpa_s->known_wps_freq = 0; 1009 if (freq) { 1010 wpa_s->after_wps = 5; 1011 wpa_s->wps_freq = freq; 1012 } else if (bssid) { 1013 bss = wpa_bss_get_bssid_latest(wpa_s, bssid); 1014 if (bss && bss->freq > 0) { 1015 wpa_s->known_wps_freq = 1; 1016 wpa_s->wps_freq = bss->freq; 1017 } 1018 } 1019 1020 wpas_wps_temp_disable(wpa_s, selected); 1021 1022 wpa_s->disconnected = 0; 1023 wpa_s->reassociate = 1; 1024 wpa_s->scan_runs = 0; 1025 wpa_s->normal_scans = 0; 1026 wpa_s->wps_success = 0; 1027 wpa_s->blacklist_cleared = 0; 1028 1029 wpa_supplicant_cancel_sched_scan(wpa_s); 1030 wpa_supplicant_req_scan(wpa_s, 0, 0); 1031 } 1032 1033 1034 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid, 1035 int p2p_group) 1036 { 1037 struct wpa_ssid *ssid; 1038 wpas_clear_wps(wpa_s); 1039 ssid = wpas_wps_add_network(wpa_s, 0, NULL, bssid); 1040 if (ssid == NULL) 1041 return -1; 1042 ssid->temporary = 1; 1043 ssid->p2p_group = p2p_group; 1044 #ifdef CONFIG_P2P 1045 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) { 1046 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1); 1047 if (ssid->ssid) { 1048 ssid->ssid_len = wpa_s->go_params->ssid_len; 1049 os_memcpy(ssid->ssid, wpa_s->go_params->ssid, 1050 ssid->ssid_len); 1051 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP " 1052 "SSID", ssid->ssid, ssid->ssid_len); 1053 } 1054 } 1055 #endif /* CONFIG_P2P */ 1056 if (wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0) < 0) 1057 return -1; 1058 if (wpa_s->wps_fragment_size) 1059 ssid->eap.fragment_size = wpa_s->wps_fragment_size; 1060 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, 1061 wpa_s, NULL); 1062 wpas_wps_reassoc(wpa_s, ssid, bssid, 0); 1063 return 0; 1064 } 1065 1066 1067 static int wpas_wps_start_dev_pw(struct wpa_supplicant *wpa_s, 1068 const u8 *dev_addr, const u8 *bssid, 1069 const char *pin, int p2p_group, u16 dev_pw_id, 1070 const u8 *peer_pubkey_hash, 1071 const u8 *ssid_val, size_t ssid_len, int freq) 1072 { 1073 struct wpa_ssid *ssid; 1074 char val[128 + 2 * WPS_OOB_PUBKEY_HASH_LEN]; 1075 unsigned int rpin = 0; 1076 char hash[2 * WPS_OOB_PUBKEY_HASH_LEN + 10]; 1077 1078 wpas_clear_wps(wpa_s); 1079 if (bssid && is_zero_ether_addr(bssid)) 1080 bssid = NULL; 1081 ssid = wpas_wps_add_network(wpa_s, 0, dev_addr, bssid); 1082 if (ssid == NULL) { 1083 wpa_printf(MSG_DEBUG, "WPS: Could not add network"); 1084 return -1; 1085 } 1086 ssid->temporary = 1; 1087 ssid->p2p_group = p2p_group; 1088 if (ssid_val) { 1089 ssid->ssid = os_malloc(ssid_len); 1090 if (ssid->ssid) { 1091 os_memcpy(ssid->ssid, ssid_val, ssid_len); 1092 ssid->ssid_len = ssid_len; 1093 } 1094 } 1095 if (peer_pubkey_hash) { 1096 os_memcpy(hash, " pkhash=", 8); 1097 wpa_snprintf_hex_uppercase(hash + 8, sizeof(hash) - 8, 1098 peer_pubkey_hash, 1099 WPS_OOB_PUBKEY_HASH_LEN); 1100 } else { 1101 hash[0] = '\0'; 1102 } 1103 #ifdef CONFIG_P2P 1104 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) { 1105 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1); 1106 if (ssid->ssid) { 1107 ssid->ssid_len = wpa_s->go_params->ssid_len; 1108 os_memcpy(ssid->ssid, wpa_s->go_params->ssid, 1109 ssid->ssid_len); 1110 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP " 1111 "SSID", ssid->ssid, ssid->ssid_len); 1112 } 1113 } 1114 #endif /* CONFIG_P2P */ 1115 if (pin) 1116 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u%s\"", 1117 pin, dev_pw_id, hash); 1118 else if (pin == NULL && dev_pw_id == DEV_PW_NFC_CONNECTION_HANDOVER) { 1119 os_snprintf(val, sizeof(val), "\"dev_pw_id=%u%s\"", 1120 dev_pw_id, hash); 1121 } else { 1122 rpin = wps_generate_pin(); 1123 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u%s\"", 1124 rpin, dev_pw_id, hash); 1125 } 1126 if (wpa_config_set(ssid, "phase1", val, 0) < 0) { 1127 wpa_printf(MSG_DEBUG, "WPS: Failed to set phase1 '%s'", val); 1128 return -1; 1129 } 1130 if (wpa_s->wps_fragment_size) 1131 ssid->eap.fragment_size = wpa_s->wps_fragment_size; 1132 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, 1133 wpa_s, NULL); 1134 wpa_s->wps_ap_iter = 1; 1135 wpas_wps_reassoc(wpa_s, ssid, bssid, freq); 1136 return rpin; 1137 } 1138 1139 1140 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid, 1141 const char *pin, int p2p_group, u16 dev_pw_id) 1142 { 1143 return wpas_wps_start_dev_pw(wpa_s, NULL, bssid, pin, p2p_group, 1144 dev_pw_id, NULL, NULL, 0, 0); 1145 } 1146 1147 1148 /* Cancel the wps pbc/pin requests */ 1149 int wpas_wps_cancel(struct wpa_supplicant *wpa_s) 1150 { 1151 #ifdef CONFIG_AP 1152 if (wpa_s->ap_iface) { 1153 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode"); 1154 return wpa_supplicant_ap_wps_cancel(wpa_s); 1155 } 1156 #endif /* CONFIG_AP */ 1157 1158 if (wpa_s->wpa_state == WPA_SCANNING || 1159 wpa_s->wpa_state == WPA_DISCONNECTED) { 1160 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan"); 1161 wpa_supplicant_cancel_scan(wpa_s); 1162 wpas_clear_wps(wpa_s); 1163 } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) { 1164 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - " 1165 "deauthenticate"); 1166 wpa_supplicant_deauthenticate(wpa_s, 1167 WLAN_REASON_DEAUTH_LEAVING); 1168 wpas_clear_wps(wpa_s); 1169 } else { 1170 wpas_wps_reenable_networks(wpa_s); 1171 wpas_wps_clear_ap_info(wpa_s); 1172 if (eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL) > 1173 0) 1174 wpas_clear_wps(wpa_s); 1175 } 1176 1177 wpa_s->after_wps = 0; 1178 1179 return 0; 1180 } 1181 1182 1183 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid, 1184 const char *pin, struct wps_new_ap_settings *settings) 1185 { 1186 struct wpa_ssid *ssid; 1187 char val[200]; 1188 char *pos, *end; 1189 int res; 1190 1191 if (!pin) 1192 return -1; 1193 wpas_clear_wps(wpa_s); 1194 ssid = wpas_wps_add_network(wpa_s, 1, NULL, bssid); 1195 if (ssid == NULL) 1196 return -1; 1197 ssid->temporary = 1; 1198 pos = val; 1199 end = pos + sizeof(val); 1200 res = os_snprintf(pos, end - pos, "\"pin=%s", pin); 1201 if (res < 0 || res >= end - pos) 1202 return -1; 1203 pos += res; 1204 if (settings) { 1205 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s " 1206 "new_encr=%s new_key=%s", 1207 settings->ssid_hex, settings->auth, 1208 settings->encr, settings->key_hex); 1209 if (res < 0 || res >= end - pos) 1210 return -1; 1211 pos += res; 1212 } 1213 res = os_snprintf(pos, end - pos, "\""); 1214 if (res < 0 || res >= end - pos) 1215 return -1; 1216 if (wpa_config_set(ssid, "phase1", val, 0) < 0) 1217 return -1; 1218 if (wpa_s->wps_fragment_size) 1219 ssid->eap.fragment_size = wpa_s->wps_fragment_size; 1220 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, 1221 wpa_s, NULL); 1222 wpas_wps_reassoc(wpa_s, ssid, bssid, 0); 1223 return 0; 1224 } 1225 1226 1227 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, 1228 const u8 *p2p_dev_addr, const u8 *psk, 1229 size_t psk_len) 1230 { 1231 if (is_zero_ether_addr(p2p_dev_addr)) { 1232 wpa_printf(MSG_DEBUG, 1233 "Received new WPA/WPA2-PSK from WPS for STA " MACSTR, 1234 MAC2STR(mac_addr)); 1235 } else { 1236 wpa_printf(MSG_DEBUG, 1237 "Received new WPA/WPA2-PSK from WPS for STA " MACSTR 1238 " P2P Device Addr " MACSTR, 1239 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr)); 1240 } 1241 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len); 1242 1243 /* TODO */ 1244 1245 return 0; 1246 } 1247 1248 1249 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e, 1250 const struct wps_device_data *dev) 1251 { 1252 char uuid[40], txt[400]; 1253 int len; 1254 char devtype[WPS_DEV_TYPE_BUFSIZE]; 1255 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid))) 1256 return; 1257 wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid); 1258 len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR 1259 " [%s|%s|%s|%s|%s|%s]", 1260 uuid, MAC2STR(dev->mac_addr), dev->device_name, 1261 dev->manufacturer, dev->model_name, 1262 dev->model_number, dev->serial_number, 1263 wps_dev_type_bin2str(dev->pri_dev_type, devtype, 1264 sizeof(devtype))); 1265 if (len > 0 && len < (int) sizeof(txt)) 1266 wpa_printf(MSG_INFO, "%s", txt); 1267 } 1268 1269 1270 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id, 1271 u16 sel_reg_config_methods) 1272 { 1273 #ifdef CONFIG_WPS_ER 1274 struct wpa_supplicant *wpa_s = ctx; 1275 1276 if (wpa_s->wps_er == NULL) 1277 return; 1278 wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d " 1279 "dev_password_id=%u sel_reg_config_methods=0x%x", 1280 sel_reg, dev_passwd_id, sel_reg_config_methods); 1281 wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id, 1282 sel_reg_config_methods); 1283 #endif /* CONFIG_WPS_ER */ 1284 } 1285 1286 1287 static u16 wps_fix_config_methods(u16 config_methods) 1288 { 1289 if ((config_methods & 1290 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY | 1291 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) { 1292 wpa_printf(MSG_INFO, "WPS: Converting display to " 1293 "virtual_display for WPS 2.0 compliance"); 1294 config_methods |= WPS_CONFIG_VIRT_DISPLAY; 1295 } 1296 if ((config_methods & 1297 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON | 1298 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) { 1299 wpa_printf(MSG_INFO, "WPS: Converting push_button to " 1300 "virtual_push_button for WPS 2.0 compliance"); 1301 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON; 1302 } 1303 1304 return config_methods; 1305 } 1306 1307 1308 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s, 1309 struct wps_context *wps) 1310 { 1311 char buf[50]; 1312 const char *src; 1313 1314 if (is_nil_uuid(wpa_s->conf->uuid)) { 1315 struct wpa_supplicant *first; 1316 first = wpa_s->global->ifaces; 1317 while (first && first->next) 1318 first = first->next; 1319 if (first && first != wpa_s) { 1320 if (wps != wpa_s->global->ifaces->wps) 1321 os_memcpy(wps->uuid, 1322 wpa_s->global->ifaces->wps->uuid, 1323 WPS_UUID_LEN); 1324 src = "from the first interface"; 1325 } else { 1326 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid); 1327 src = "based on MAC address"; 1328 } 1329 } else { 1330 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN); 1331 src = "based on configuration"; 1332 } 1333 1334 uuid_bin2str(wps->uuid, buf, sizeof(buf)); 1335 wpa_dbg(wpa_s, MSG_DEBUG, "WPS: UUID %s: %s", src, buf); 1336 } 1337 1338 1339 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s, 1340 struct wps_context *wps) 1341 { 1342 wpabuf_free(wps->dev.vendor_ext_m1); 1343 wps->dev.vendor_ext_m1 = NULL; 1344 1345 if (wpa_s->conf->wps_vendor_ext_m1) { 1346 wps->dev.vendor_ext_m1 = 1347 wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1); 1348 if (!wps->dev.vendor_ext_m1) { 1349 wpa_printf(MSG_ERROR, "WPS: Cannot " 1350 "allocate memory for vendor_ext_m1"); 1351 } 1352 } 1353 } 1354 1355 1356 int wpas_wps_init(struct wpa_supplicant *wpa_s) 1357 { 1358 struct wps_context *wps; 1359 struct wps_registrar_config rcfg; 1360 struct hostapd_hw_modes *modes; 1361 u16 m; 1362 1363 wps = os_zalloc(sizeof(*wps)); 1364 if (wps == NULL) 1365 return -1; 1366 1367 wps->cred_cb = wpa_supplicant_wps_cred; 1368 wps->event_cb = wpa_supplicant_wps_event; 1369 wps->rf_band_cb = wpa_supplicant_wps_rf_band; 1370 wps->cb_ctx = wpa_s; 1371 1372 wps->dev.device_name = wpa_s->conf->device_name; 1373 wps->dev.manufacturer = wpa_s->conf->manufacturer; 1374 wps->dev.model_name = wpa_s->conf->model_name; 1375 wps->dev.model_number = wpa_s->conf->model_number; 1376 wps->dev.serial_number = wpa_s->conf->serial_number; 1377 wps->config_methods = 1378 wps_config_methods_str2bin(wpa_s->conf->config_methods); 1379 if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) == 1380 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) { 1381 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config " 1382 "methods are not allowed at the same time"); 1383 os_free(wps); 1384 return -1; 1385 } 1386 wps->config_methods = wps_fix_config_methods(wps->config_methods); 1387 wps->dev.config_methods = wps->config_methods; 1388 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type, 1389 WPS_DEV_TYPE_LEN); 1390 1391 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 1392 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type, 1393 WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types); 1394 1395 wpas_wps_set_vendor_ext_m1(wpa_s, wps); 1396 1397 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version); 1398 modes = wpa_s->hw.modes; 1399 if (modes) { 1400 for (m = 0; m < wpa_s->hw.num_modes; m++) { 1401 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B || 1402 modes[m].mode == HOSTAPD_MODE_IEEE80211G) 1403 wps->dev.rf_bands |= WPS_RF_24GHZ; 1404 else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A) 1405 wps->dev.rf_bands |= WPS_RF_50GHZ; 1406 } 1407 } 1408 if (wps->dev.rf_bands == 0) { 1409 /* 1410 * Default to claiming support for both bands if the driver 1411 * does not provide support for fetching supported bands. 1412 */ 1413 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ; 1414 } 1415 os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN); 1416 wpas_wps_set_uuid(wpa_s, wps); 1417 1418 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK; 1419 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP; 1420 1421 os_memset(&rcfg, 0, sizeof(rcfg)); 1422 rcfg.new_psk_cb = wpas_wps_new_psk_cb; 1423 rcfg.pin_needed_cb = wpas_wps_pin_needed_cb; 1424 rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb; 1425 rcfg.cb_ctx = wpa_s; 1426 1427 wps->registrar = wps_registrar_init(wps, &rcfg); 1428 if (wps->registrar == NULL) { 1429 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar"); 1430 os_free(wps); 1431 return -1; 1432 } 1433 1434 wpa_s->wps = wps; 1435 1436 return 0; 1437 } 1438 1439 1440 #ifdef CONFIG_WPS_ER 1441 static void wpas_wps_nfc_clear(struct wps_context *wps) 1442 { 1443 wps->ap_nfc_dev_pw_id = 0; 1444 wpabuf_free(wps->ap_nfc_dh_pubkey); 1445 wps->ap_nfc_dh_pubkey = NULL; 1446 wpabuf_free(wps->ap_nfc_dh_privkey); 1447 wps->ap_nfc_dh_privkey = NULL; 1448 wpabuf_free(wps->ap_nfc_dev_pw); 1449 wps->ap_nfc_dev_pw = NULL; 1450 } 1451 #endif /* CONFIG_WPS_ER */ 1452 1453 1454 void wpas_wps_deinit(struct wpa_supplicant *wpa_s) 1455 { 1456 wpas_wps_assoc_with_cred_cancel(wpa_s); 1457 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL); 1458 eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL); 1459 eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL); 1460 wpas_wps_clear_ap_info(wpa_s); 1461 1462 #ifdef CONFIG_P2P 1463 eloop_cancel_timeout(wpas_p2p_pbc_overlap_cb, wpa_s, NULL); 1464 #endif /* CONFIG_P2P */ 1465 1466 if (wpa_s->wps == NULL) 1467 return; 1468 1469 #ifdef CONFIG_WPS_ER 1470 wps_er_deinit(wpa_s->wps_er, NULL, NULL); 1471 wpa_s->wps_er = NULL; 1472 wpas_wps_nfc_clear(wpa_s->wps); 1473 #endif /* CONFIG_WPS_ER */ 1474 1475 wps_registrar_deinit(wpa_s->wps->registrar); 1476 wpabuf_free(wpa_s->wps->dh_pubkey); 1477 wpabuf_free(wpa_s->wps->dh_privkey); 1478 wpabuf_free(wpa_s->wps->dev.vendor_ext_m1); 1479 os_free(wpa_s->wps->network_key); 1480 os_free(wpa_s->wps); 1481 wpa_s->wps = NULL; 1482 } 1483 1484 1485 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s, 1486 struct wpa_ssid *ssid, struct wpa_bss *bss) 1487 { 1488 struct wpabuf *wps_ie; 1489 1490 if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS)) 1491 return -1; 1492 1493 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1494 if (eap_is_wps_pbc_enrollee(&ssid->eap)) { 1495 if (!wps_ie) { 1496 wpa_printf(MSG_DEBUG, " skip - non-WPS AP"); 1497 return 0; 1498 } 1499 1500 if (!wps_is_selected_pbc_registrar(wps_ie)) { 1501 wpa_printf(MSG_DEBUG, " skip - WPS AP " 1502 "without active PBC Registrar"); 1503 wpabuf_free(wps_ie); 1504 return 0; 1505 } 1506 1507 /* TODO: overlap detection */ 1508 wpa_printf(MSG_DEBUG, " selected based on WPS IE " 1509 "(Active PBC)"); 1510 wpabuf_free(wps_ie); 1511 return 1; 1512 } 1513 1514 if (eap_is_wps_pin_enrollee(&ssid->eap)) { 1515 if (!wps_ie) { 1516 wpa_printf(MSG_DEBUG, " skip - non-WPS AP"); 1517 return 0; 1518 } 1519 1520 /* 1521 * Start with WPS APs that advertise our address as an 1522 * authorized MAC (v2.0) or active PIN Registrar (v1.0) and 1523 * allow any WPS AP after couple of scans since some APs do not 1524 * set Selected Registrar attribute properly when using 1525 * external Registrar. 1526 */ 1527 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) { 1528 if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) { 1529 wpa_printf(MSG_DEBUG, " skip - WPS AP " 1530 "without active PIN Registrar"); 1531 wpabuf_free(wps_ie); 1532 return 0; 1533 } 1534 wpa_printf(MSG_DEBUG, " selected based on WPS IE"); 1535 } else { 1536 wpa_printf(MSG_DEBUG, " selected based on WPS IE " 1537 "(Authorized MAC or Active PIN)"); 1538 } 1539 wpabuf_free(wps_ie); 1540 return 1; 1541 } 1542 1543 if (wps_ie) { 1544 wpa_printf(MSG_DEBUG, " selected based on WPS IE"); 1545 wpabuf_free(wps_ie); 1546 return 1; 1547 } 1548 1549 return -1; 1550 } 1551 1552 1553 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s, 1554 struct wpa_ssid *ssid, 1555 struct wpa_bss *bss) 1556 { 1557 struct wpabuf *wps_ie = NULL; 1558 int ret = 0; 1559 1560 if (eap_is_wps_pbc_enrollee(&ssid->eap)) { 1561 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1562 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) { 1563 /* allow wildcard SSID for WPS PBC */ 1564 ret = 1; 1565 } 1566 } else if (eap_is_wps_pin_enrollee(&ssid->eap)) { 1567 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1568 if (wps_ie && 1569 (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) || 1570 wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) { 1571 /* allow wildcard SSID for WPS PIN */ 1572 ret = 1; 1573 } 1574 } 1575 1576 if (!ret && ssid->bssid_set && 1577 os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) { 1578 /* allow wildcard SSID due to hardcoded BSSID match */ 1579 ret = 1; 1580 } 1581 1582 #ifdef CONFIG_WPS_STRICT 1583 if (wps_ie) { 1584 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len > 1585 0, bss->bssid) < 0) 1586 ret = 0; 1587 if (bss->beacon_ie_len) { 1588 struct wpabuf *bcn_wps; 1589 bcn_wps = wpa_bss_get_vendor_ie_multi_beacon( 1590 bss, WPS_IE_VENDOR_TYPE); 1591 if (bcn_wps == NULL) { 1592 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE " 1593 "missing from AP Beacon"); 1594 ret = 0; 1595 } else { 1596 if (wps_validate_beacon(wps_ie) < 0) 1597 ret = 0; 1598 wpabuf_free(bcn_wps); 1599 } 1600 } 1601 } 1602 #endif /* CONFIG_WPS_STRICT */ 1603 1604 wpabuf_free(wps_ie); 1605 1606 return ret; 1607 } 1608 1609 1610 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s, 1611 struct wpa_bss *selected, struct wpa_ssid *ssid) 1612 { 1613 const u8 *sel_uuid, *uuid; 1614 struct wpabuf *wps_ie; 1615 int ret = 0; 1616 struct wpa_bss *bss; 1617 1618 if (!eap_is_wps_pbc_enrollee(&ssid->eap)) 1619 return 0; 1620 1621 wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is " 1622 "present in scan results; selected BSSID " MACSTR, 1623 MAC2STR(selected->bssid)); 1624 1625 /* Make sure that only one AP is in active PBC mode */ 1626 wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE); 1627 if (wps_ie) { 1628 sel_uuid = wps_get_uuid_e(wps_ie); 1629 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS", 1630 sel_uuid, UUID_LEN); 1631 } else { 1632 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include " 1633 "WPS IE?!"); 1634 sel_uuid = NULL; 1635 } 1636 1637 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 1638 struct wpabuf *ie; 1639 if (bss == selected) 1640 continue; 1641 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1642 if (!ie) 1643 continue; 1644 if (!wps_is_selected_pbc_registrar(ie)) { 1645 wpabuf_free(ie); 1646 continue; 1647 } 1648 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: " 1649 MACSTR, MAC2STR(bss->bssid)); 1650 uuid = wps_get_uuid_e(ie); 1651 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS", 1652 uuid, UUID_LEN); 1653 if (sel_uuid == NULL || uuid == NULL || 1654 os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) { 1655 ret = 1; /* PBC overlap */ 1656 wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: " 1657 MACSTR " and " MACSTR, 1658 MAC2STR(selected->bssid), 1659 MAC2STR(bss->bssid)); 1660 wpabuf_free(ie); 1661 break; 1662 } 1663 1664 /* TODO: verify that this is reasonable dual-band situation */ 1665 1666 wpabuf_free(ie); 1667 } 1668 1669 wpabuf_free(wps_ie); 1670 1671 return ret; 1672 } 1673 1674 1675 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s) 1676 { 1677 struct wpa_bss *bss; 1678 unsigned int pbc = 0, auth = 0, pin = 0, wps = 0; 1679 1680 if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED) 1681 return; 1682 1683 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 1684 struct wpabuf *ie; 1685 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); 1686 if (!ie) 1687 continue; 1688 if (wps_is_selected_pbc_registrar(ie)) 1689 pbc++; 1690 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0)) 1691 auth++; 1692 else if (wps_is_selected_pin_registrar(ie)) 1693 pin++; 1694 else 1695 wps++; 1696 wpabuf_free(ie); 1697 } 1698 1699 if (pbc) 1700 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC); 1701 else if (auth) 1702 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH); 1703 else if (pin) 1704 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN); 1705 else if (wps) 1706 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE); 1707 } 1708 1709 1710 int wpas_wps_searching(struct wpa_supplicant *wpa_s) 1711 { 1712 struct wpa_ssid *ssid; 1713 1714 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 1715 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled) 1716 return 1; 1717 } 1718 1719 return 0; 1720 } 1721 1722 1723 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf, 1724 char *end) 1725 { 1726 struct wpabuf *wps_ie; 1727 int ret; 1728 1729 wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA); 1730 if (wps_ie == NULL) 1731 return 0; 1732 1733 ret = wps_attr_text(wps_ie, buf, end); 1734 wpabuf_free(wps_ie); 1735 return ret; 1736 } 1737 1738 1739 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter) 1740 { 1741 #ifdef CONFIG_WPS_ER 1742 if (wpa_s->wps_er) { 1743 wps_er_refresh(wpa_s->wps_er); 1744 return 0; 1745 } 1746 wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter); 1747 if (wpa_s->wps_er == NULL) 1748 return -1; 1749 return 0; 1750 #else /* CONFIG_WPS_ER */ 1751 return 0; 1752 #endif /* CONFIG_WPS_ER */ 1753 } 1754 1755 1756 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s) 1757 { 1758 #ifdef CONFIG_WPS_ER 1759 wps_er_deinit(wpa_s->wps_er, NULL, NULL); 1760 wpa_s->wps_er = NULL; 1761 #endif /* CONFIG_WPS_ER */ 1762 return 0; 1763 } 1764 1765 1766 #ifdef CONFIG_WPS_ER 1767 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr, 1768 const char *uuid, const char *pin) 1769 { 1770 u8 u[UUID_LEN]; 1771 const u8 *use_uuid = NULL; 1772 u8 addr_buf[ETH_ALEN]; 1773 1774 if (os_strcmp(uuid, "any") == 0) { 1775 } else if (uuid_str2bin(uuid, u) == 0) { 1776 use_uuid = u; 1777 } else if (hwaddr_aton(uuid, addr_buf) == 0) { 1778 use_uuid = wps_er_get_sta_uuid(wpa_s->wps_er, addr_buf); 1779 if (use_uuid == NULL) 1780 return -1; 1781 } else 1782 return -1; 1783 return wps_registrar_add_pin(wpa_s->wps->registrar, addr, 1784 use_uuid, 1785 (const u8 *) pin, os_strlen(pin), 300); 1786 } 1787 1788 1789 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid) 1790 { 1791 u8 u[UUID_LEN], *use_uuid = NULL; 1792 u8 addr[ETH_ALEN], *use_addr = NULL; 1793 1794 if (uuid_str2bin(uuid, u) == 0) 1795 use_uuid = u; 1796 else if (hwaddr_aton(uuid, addr) == 0) 1797 use_addr = addr; 1798 else 1799 return -1; 1800 return wps_er_pbc(wpa_s->wps_er, use_uuid, use_addr); 1801 } 1802 1803 1804 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid, 1805 const char *pin) 1806 { 1807 u8 u[UUID_LEN], *use_uuid = NULL; 1808 u8 addr[ETH_ALEN], *use_addr = NULL; 1809 1810 if (uuid_str2bin(uuid, u) == 0) 1811 use_uuid = u; 1812 else if (hwaddr_aton(uuid, addr) == 0) 1813 use_addr = addr; 1814 else 1815 return -1; 1816 1817 return wps_er_learn(wpa_s->wps_er, use_uuid, use_addr, (const u8 *) pin, 1818 os_strlen(pin)); 1819 } 1820 1821 1822 static int wpas_wps_network_to_cred(struct wpa_ssid *ssid, 1823 struct wps_credential *cred) 1824 { 1825 os_memset(cred, 0, sizeof(*cred)); 1826 if (ssid->ssid_len > 32) 1827 return -1; 1828 os_memcpy(cred->ssid, ssid->ssid, ssid->ssid_len); 1829 cred->ssid_len = ssid->ssid_len; 1830 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) { 1831 cred->auth_type = (ssid->proto & WPA_PROTO_RSN) ? 1832 WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK; 1833 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP) 1834 cred->encr_type = WPS_ENCR_AES; 1835 else 1836 cred->encr_type = WPS_ENCR_TKIP; 1837 if (ssid->passphrase) { 1838 cred->key_len = os_strlen(ssid->passphrase); 1839 if (cred->key_len >= 64) 1840 return -1; 1841 os_memcpy(cred->key, ssid->passphrase, cred->key_len); 1842 } else if (ssid->psk_set) { 1843 cred->key_len = 32; 1844 os_memcpy(cred->key, ssid->psk, 32); 1845 } else 1846 return -1; 1847 } else { 1848 cred->auth_type = WPS_AUTH_OPEN; 1849 cred->encr_type = WPS_ENCR_NONE; 1850 } 1851 1852 return 0; 1853 } 1854 1855 1856 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid, 1857 int id) 1858 { 1859 u8 u[UUID_LEN], *use_uuid = NULL; 1860 u8 addr[ETH_ALEN], *use_addr = NULL; 1861 struct wpa_ssid *ssid; 1862 struct wps_credential cred; 1863 1864 if (uuid_str2bin(uuid, u) == 0) 1865 use_uuid = u; 1866 else if (hwaddr_aton(uuid, addr) == 0) 1867 use_addr = addr; 1868 else 1869 return -1; 1870 ssid = wpa_config_get_network(wpa_s->conf, id); 1871 if (ssid == NULL || ssid->ssid == NULL) 1872 return -1; 1873 1874 if (wpas_wps_network_to_cred(ssid, &cred) < 0) 1875 return -1; 1876 return wps_er_set_config(wpa_s->wps_er, use_uuid, use_addr, &cred); 1877 } 1878 1879 1880 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid, 1881 const char *pin, struct wps_new_ap_settings *settings) 1882 { 1883 u8 u[UUID_LEN], *use_uuid = NULL; 1884 u8 addr[ETH_ALEN], *use_addr = NULL; 1885 struct wps_credential cred; 1886 size_t len; 1887 1888 if (uuid_str2bin(uuid, u) == 0) 1889 use_uuid = u; 1890 else if (hwaddr_aton(uuid, addr) == 0) 1891 use_addr = addr; 1892 else 1893 return -1; 1894 if (settings->ssid_hex == NULL || settings->auth == NULL || 1895 settings->encr == NULL || settings->key_hex == NULL) 1896 return -1; 1897 1898 os_memset(&cred, 0, sizeof(cred)); 1899 len = os_strlen(settings->ssid_hex); 1900 if ((len & 1) || len > 2 * sizeof(cred.ssid) || 1901 hexstr2bin(settings->ssid_hex, cred.ssid, len / 2)) 1902 return -1; 1903 cred.ssid_len = len / 2; 1904 1905 len = os_strlen(settings->key_hex); 1906 if ((len & 1) || len > 2 * sizeof(cred.key) || 1907 hexstr2bin(settings->key_hex, cred.key, len / 2)) 1908 return -1; 1909 cred.key_len = len / 2; 1910 1911 if (os_strcmp(settings->auth, "OPEN") == 0) 1912 cred.auth_type = WPS_AUTH_OPEN; 1913 else if (os_strcmp(settings->auth, "WPAPSK") == 0) 1914 cred.auth_type = WPS_AUTH_WPAPSK; 1915 else if (os_strcmp(settings->auth, "WPA2PSK") == 0) 1916 cred.auth_type = WPS_AUTH_WPA2PSK; 1917 else 1918 return -1; 1919 1920 if (os_strcmp(settings->encr, "NONE") == 0) 1921 cred.encr_type = WPS_ENCR_NONE; 1922 #ifdef CONFIG_TESTING_OPTIONS 1923 else if (os_strcmp(settings->encr, "WEP") == 0) 1924 cred.encr_type = WPS_ENCR_WEP; 1925 #endif /* CONFIG_TESTING_OPTIONS */ 1926 else if (os_strcmp(settings->encr, "TKIP") == 0) 1927 cred.encr_type = WPS_ENCR_TKIP; 1928 else if (os_strcmp(settings->encr, "CCMP") == 0) 1929 cred.encr_type = WPS_ENCR_AES; 1930 else 1931 return -1; 1932 1933 return wps_er_config(wpa_s->wps_er, use_uuid, use_addr, 1934 (const u8 *) pin, os_strlen(pin), &cred); 1935 } 1936 1937 1938 #ifdef CONFIG_WPS_NFC 1939 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s, 1940 int ndef, const char *uuid) 1941 { 1942 struct wpabuf *ret; 1943 u8 u[UUID_LEN], *use_uuid = NULL; 1944 u8 addr[ETH_ALEN], *use_addr = NULL; 1945 1946 if (!wpa_s->wps_er) 1947 return NULL; 1948 1949 if (uuid_str2bin(uuid, u) == 0) 1950 use_uuid = u; 1951 else if (hwaddr_aton(uuid, addr) == 0) 1952 use_addr = addr; 1953 else 1954 return NULL; 1955 1956 ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr); 1957 if (ndef && ret) { 1958 struct wpabuf *tmp; 1959 tmp = ndef_build_wifi(ret); 1960 wpabuf_free(ret); 1961 if (tmp == NULL) 1962 return NULL; 1963 ret = tmp; 1964 } 1965 1966 return ret; 1967 } 1968 #endif /* CONFIG_WPS_NFC */ 1969 1970 1971 static int callbacks_pending = 0; 1972 1973 static void wpas_wps_terminate_cb(void *ctx) 1974 { 1975 wpa_printf(MSG_DEBUG, "WPS ER: Terminated"); 1976 if (--callbacks_pending <= 0) 1977 eloop_terminate(); 1978 } 1979 #endif /* CONFIG_WPS_ER */ 1980 1981 1982 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s) 1983 { 1984 #ifdef CONFIG_WPS_ER 1985 if (wpa_s->wps_er) { 1986 callbacks_pending++; 1987 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s); 1988 wpa_s->wps_er = NULL; 1989 return 1; 1990 } 1991 #endif /* CONFIG_WPS_ER */ 1992 return 0; 1993 } 1994 1995 1996 void wpas_wps_update_config(struct wpa_supplicant *wpa_s) 1997 { 1998 struct wps_context *wps = wpa_s->wps; 1999 2000 if (wps == NULL) 2001 return; 2002 2003 if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) { 2004 wps->config_methods = wps_config_methods_str2bin( 2005 wpa_s->conf->config_methods); 2006 if ((wps->config_methods & 2007 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) == 2008 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) { 2009 wpa_printf(MSG_ERROR, "WPS: Both Label and Display " 2010 "config methods are not allowed at the " 2011 "same time"); 2012 wps->config_methods &= ~WPS_CONFIG_LABEL; 2013 } 2014 } 2015 wps->config_methods = wps_fix_config_methods(wps->config_methods); 2016 wps->dev.config_methods = wps->config_methods; 2017 2018 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) 2019 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type, 2020 WPS_DEV_TYPE_LEN); 2021 2022 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) { 2023 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 2024 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type, 2025 wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN); 2026 } 2027 2028 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) 2029 wpas_wps_set_vendor_ext_m1(wpa_s, wps); 2030 2031 if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION) 2032 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version); 2033 2034 if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID) 2035 wpas_wps_set_uuid(wpa_s, wps); 2036 2037 if (wpa_s->conf->changed_parameters & 2038 (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) { 2039 /* Update pointers to make sure they refer current values */ 2040 wps->dev.device_name = wpa_s->conf->device_name; 2041 wps->dev.manufacturer = wpa_s->conf->manufacturer; 2042 wps->dev.model_name = wpa_s->conf->model_name; 2043 wps->dev.model_number = wpa_s->conf->model_number; 2044 wps->dev.serial_number = wpa_s->conf->serial_number; 2045 } 2046 } 2047 2048 2049 #ifdef CONFIG_WPS_NFC 2050 2051 #ifdef CONFIG_WPS_ER 2052 static struct wpabuf * 2053 wpas_wps_network_config_token(struct wpa_supplicant *wpa_s, int ndef, 2054 struct wpa_ssid *ssid) 2055 { 2056 struct wpabuf *ret; 2057 struct wps_credential cred; 2058 2059 if (wpas_wps_network_to_cred(ssid, &cred) < 0) 2060 return NULL; 2061 2062 ret = wps_er_config_token_from_cred(wpa_s->wps, &cred); 2063 2064 if (ndef && ret) { 2065 struct wpabuf *tmp; 2066 tmp = ndef_build_wifi(ret); 2067 wpabuf_free(ret); 2068 if (tmp == NULL) 2069 return NULL; 2070 ret = tmp; 2071 } 2072 2073 return ret; 2074 } 2075 #endif /* CONFIG_WPS_ER */ 2076 2077 2078 struct wpabuf * wpas_wps_nfc_config_token(struct wpa_supplicant *wpa_s, 2079 int ndef, const char *id_str) 2080 { 2081 #ifdef CONFIG_WPS_ER 2082 if (id_str) { 2083 int id; 2084 char *end = NULL; 2085 struct wpa_ssid *ssid; 2086 2087 id = strtol(id_str, &end, 10); 2088 if (end && *end) 2089 return NULL; 2090 2091 ssid = wpa_config_get_network(wpa_s->conf, id); 2092 if (ssid == NULL) 2093 return NULL; 2094 return wpas_wps_network_config_token(wpa_s, ndef, ssid); 2095 } 2096 #endif /* CONFIG_WPS_ER */ 2097 #ifdef CONFIG_AP 2098 if (wpa_s->ap_iface) 2099 return wpas_ap_wps_nfc_config_token(wpa_s, ndef); 2100 #endif /* CONFIG_AP */ 2101 return NULL; 2102 } 2103 2104 2105 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef) 2106 { 2107 if (wpa_s->conf->wps_nfc_pw_from_config) { 2108 return wps_nfc_token_build(ndef, 2109 wpa_s->conf->wps_nfc_dev_pw_id, 2110 wpa_s->conf->wps_nfc_dh_pubkey, 2111 wpa_s->conf->wps_nfc_dev_pw); 2112 } 2113 2114 return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id, 2115 &wpa_s->conf->wps_nfc_dh_pubkey, 2116 &wpa_s->conf->wps_nfc_dh_privkey, 2117 &wpa_s->conf->wps_nfc_dev_pw); 2118 } 2119 2120 2121 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *go_dev_addr, 2122 const u8 *bssid, 2123 const struct wpabuf *dev_pw, u16 dev_pw_id, 2124 int p2p_group, const u8 *peer_pubkey_hash, 2125 const u8 *ssid, size_t ssid_len, int freq) 2126 { 2127 struct wps_context *wps = wpa_s->wps; 2128 char pw[32 * 2 + 1]; 2129 2130 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) { 2131 dev_pw = wpa_s->conf->wps_nfc_dev_pw; 2132 dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id; 2133 } 2134 2135 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL || 2136 wpa_s->conf->wps_nfc_dh_privkey == NULL) { 2137 wpa_printf(MSG_DEBUG, "WPS: Missing DH params - " 2138 "cannot start NFC-triggered connection"); 2139 return -1; 2140 } 2141 2142 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) { 2143 wpa_printf(MSG_DEBUG, "WPS: Missing Device Password (id=%u) - " 2144 "cannot start NFC-triggered connection", dev_pw_id); 2145 return -1; 2146 } 2147 2148 dh5_free(wps->dh_ctx); 2149 wpabuf_free(wps->dh_pubkey); 2150 wpabuf_free(wps->dh_privkey); 2151 wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey); 2152 wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey); 2153 if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) { 2154 wps->dh_ctx = NULL; 2155 wpabuf_free(wps->dh_pubkey); 2156 wps->dh_pubkey = NULL; 2157 wpabuf_free(wps->dh_privkey); 2158 wps->dh_privkey = NULL; 2159 wpa_printf(MSG_DEBUG, "WPS: Failed to get DH priv/pub key"); 2160 return -1; 2161 } 2162 wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey); 2163 if (wps->dh_ctx == NULL) { 2164 wpabuf_free(wps->dh_pubkey); 2165 wps->dh_pubkey = NULL; 2166 wpabuf_free(wps->dh_privkey); 2167 wps->dh_privkey = NULL; 2168 wpa_printf(MSG_DEBUG, "WPS: Failed to initialize DH context"); 2169 return -1; 2170 } 2171 2172 if (dev_pw) { 2173 wpa_snprintf_hex_uppercase(pw, sizeof(pw), 2174 wpabuf_head(dev_pw), 2175 wpabuf_len(dev_pw)); 2176 } 2177 return wpas_wps_start_dev_pw(wpa_s, go_dev_addr, bssid, 2178 dev_pw ? pw : NULL, 2179 p2p_group, dev_pw_id, peer_pubkey_hash, 2180 ssid, ssid_len, freq); 2181 } 2182 2183 2184 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s, 2185 struct wps_parse_attr *attr) 2186 { 2187 /* 2188 * Disable existing networks temporarily to allow the newly learned 2189 * credential to be preferred. Enable the temporarily disabled networks 2190 * after 10 seconds. 2191 */ 2192 wpas_wps_temp_disable(wpa_s, NULL); 2193 eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s, 2194 NULL); 2195 2196 if (wps_oob_use_cred(wpa_s->wps, attr) < 0) 2197 return -1; 2198 2199 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) 2200 return 0; 2201 2202 if (attr->ap_channel) { 2203 u16 chan = WPA_GET_BE16(attr->ap_channel); 2204 int freq = 0; 2205 2206 if (chan >= 1 && chan <= 13) 2207 freq = 2407 + 5 * chan; 2208 else if (chan == 14) 2209 freq = 2484; 2210 else if (chan >= 30) 2211 freq = 5000 + 5 * chan; 2212 2213 if (freq) { 2214 wpa_printf(MSG_DEBUG, "WPS: Credential container indicated AP channel %u -> %u MHz", 2215 chan, freq); 2216 wpa_s->after_wps = 5; 2217 wpa_s->wps_freq = freq; 2218 } 2219 } 2220 2221 wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network " 2222 "based on the received credential added"); 2223 wpa_s->normal_scans = 0; 2224 wpa_supplicant_reinit_autoscan(wpa_s); 2225 wpa_s->disconnected = 0; 2226 wpa_s->reassociate = 1; 2227 2228 wpa_supplicant_cancel_sched_scan(wpa_s); 2229 wpa_supplicant_req_scan(wpa_s, 0, 0); 2230 2231 return 0; 2232 } 2233 2234 2235 #ifdef CONFIG_WPS_ER 2236 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s, 2237 struct wps_parse_attr *attr) 2238 { 2239 return wps_registrar_add_nfc_password_token( 2240 wpa_s->wps->registrar, attr->oob_dev_password, 2241 attr->oob_dev_password_len); 2242 } 2243 #endif /* CONFIG_WPS_ER */ 2244 2245 2246 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s, 2247 const struct wpabuf *wps) 2248 { 2249 struct wps_parse_attr attr; 2250 2251 wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps); 2252 2253 if (wps_parse_msg(wps, &attr)) { 2254 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag"); 2255 return -1; 2256 } 2257 2258 if (attr.num_cred) 2259 return wpas_wps_use_cred(wpa_s, &attr); 2260 2261 #ifdef CONFIG_WPS_ER 2262 if (attr.oob_dev_password) 2263 return wpas_wps_add_nfc_password_token(wpa_s, &attr); 2264 #endif /* CONFIG_WPS_ER */ 2265 2266 wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag"); 2267 return -1; 2268 } 2269 2270 2271 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s, 2272 const struct wpabuf *data, int forced_freq) 2273 { 2274 const struct wpabuf *wps = data; 2275 struct wpabuf *tmp = NULL; 2276 int ret; 2277 2278 if (wpabuf_len(data) < 4) 2279 return -1; 2280 2281 if (*wpabuf_head_u8(data) != 0x10) { 2282 /* Assume this contains full NDEF record */ 2283 tmp = ndef_parse_wifi(data); 2284 if (tmp == NULL) { 2285 #ifdef CONFIG_P2P 2286 tmp = ndef_parse_p2p(data); 2287 if (tmp) { 2288 ret = wpas_p2p_nfc_tag_process(wpa_s, tmp, 2289 forced_freq); 2290 wpabuf_free(tmp); 2291 return ret; 2292 } 2293 #endif /* CONFIG_P2P */ 2294 wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF"); 2295 return -1; 2296 } 2297 wps = tmp; 2298 } 2299 2300 ret = wpas_wps_nfc_tag_process(wpa_s, wps); 2301 wpabuf_free(tmp); 2302 return ret; 2303 } 2304 2305 2306 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s, 2307 int ndef) 2308 { 2309 struct wpabuf *ret; 2310 2311 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL && 2312 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 2313 &wpa_s->conf->wps_nfc_dh_privkey) < 0) 2314 return NULL; 2315 2316 ret = wps_build_nfc_handover_req(wpa_s->wps, 2317 wpa_s->conf->wps_nfc_dh_pubkey); 2318 2319 if (ndef && ret) { 2320 struct wpabuf *tmp; 2321 tmp = ndef_build_wifi(ret); 2322 wpabuf_free(ret); 2323 if (tmp == NULL) 2324 return NULL; 2325 ret = tmp; 2326 } 2327 2328 return ret; 2329 } 2330 2331 2332 #ifdef CONFIG_WPS_NFC 2333 2334 static struct wpabuf * 2335 wpas_wps_er_nfc_handover_sel(struct wpa_supplicant *wpa_s, int ndef, 2336 const char *uuid) 2337 { 2338 #ifdef CONFIG_WPS_ER 2339 struct wpabuf *ret; 2340 u8 u[UUID_LEN], *use_uuid = NULL; 2341 u8 addr[ETH_ALEN], *use_addr = NULL; 2342 struct wps_context *wps = wpa_s->wps; 2343 2344 if (wps == NULL) 2345 return NULL; 2346 2347 if (uuid == NULL) 2348 return NULL; 2349 if (uuid_str2bin(uuid, u) == 0) 2350 use_uuid = u; 2351 else if (hwaddr_aton(uuid, addr) == 0) 2352 use_addr = addr; 2353 else 2354 return NULL; 2355 2356 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL) { 2357 if (wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 2358 &wpa_s->conf->wps_nfc_dh_privkey) < 0) 2359 return NULL; 2360 } 2361 2362 wpas_wps_nfc_clear(wps); 2363 wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER; 2364 wps->ap_nfc_dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey); 2365 wps->ap_nfc_dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey); 2366 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) { 2367 wpas_wps_nfc_clear(wps); 2368 return NULL; 2369 } 2370 2371 ret = wps_er_nfc_handover_sel(wpa_s->wps_er, wpa_s->wps, use_uuid, 2372 use_addr, wpa_s->conf->wps_nfc_dh_pubkey); 2373 if (ndef && ret) { 2374 struct wpabuf *tmp; 2375 tmp = ndef_build_wifi(ret); 2376 wpabuf_free(ret); 2377 if (tmp == NULL) 2378 return NULL; 2379 ret = tmp; 2380 } 2381 2382 return ret; 2383 #else /* CONFIG_WPS_ER */ 2384 return NULL; 2385 #endif /* CONFIG_WPS_ER */ 2386 } 2387 #endif /* CONFIG_WPS_NFC */ 2388 2389 2390 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s, 2391 int ndef, int cr, const char *uuid) 2392 { 2393 struct wpabuf *ret; 2394 if (!cr) 2395 return NULL; 2396 ret = wpas_ap_wps_nfc_handover_sel(wpa_s, ndef); 2397 if (ret) 2398 return ret; 2399 return wpas_wps_er_nfc_handover_sel(wpa_s, ndef, uuid); 2400 } 2401 2402 2403 static int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s, 2404 const struct wpabuf *data) 2405 { 2406 struct wpabuf *wps; 2407 int ret = -1; 2408 u16 wsc_len; 2409 const u8 *pos; 2410 struct wpabuf msg; 2411 struct wps_parse_attr attr; 2412 u16 dev_pw_id; 2413 const u8 *bssid = NULL; 2414 int freq = 0; 2415 2416 wps = ndef_parse_wifi(data); 2417 if (wps == NULL) 2418 return -1; 2419 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc " 2420 "payload from NFC connection handover"); 2421 wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps); 2422 if (wpabuf_len(wps) < 2) { 2423 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Select " 2424 "Message"); 2425 goto out; 2426 } 2427 pos = wpabuf_head(wps); 2428 wsc_len = WPA_GET_BE16(pos); 2429 if (wsc_len > wpabuf_len(wps) - 2) { 2430 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) " 2431 "in Wi-Fi Handover Select Message", wsc_len); 2432 goto out; 2433 } 2434 pos += 2; 2435 2436 wpa_hexdump(MSG_DEBUG, 2437 "WPS: WSC attributes in Wi-Fi Handover Select Message", 2438 pos, wsc_len); 2439 if (wsc_len < wpabuf_len(wps) - 2) { 2440 wpa_hexdump(MSG_DEBUG, 2441 "WPS: Ignore extra data after WSC attributes", 2442 pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len); 2443 } 2444 2445 wpabuf_set(&msg, pos, wsc_len); 2446 ret = wps_parse_msg(&msg, &attr); 2447 if (ret < 0) { 2448 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in " 2449 "Wi-Fi Handover Select Message"); 2450 goto out; 2451 } 2452 2453 if (attr.oob_dev_password == NULL || 2454 attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) { 2455 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password " 2456 "included in Wi-Fi Handover Select Message"); 2457 ret = -1; 2458 goto out; 2459 } 2460 2461 if (attr.ssid == NULL) { 2462 wpa_printf(MSG_DEBUG, "WPS: No SSID included in Wi-Fi Handover " 2463 "Select Message"); 2464 ret = -1; 2465 goto out; 2466 } 2467 2468 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", attr.ssid, attr.ssid_len); 2469 2470 if (attr.mac_addr) { 2471 bssid = attr.mac_addr; 2472 wpa_printf(MSG_DEBUG, "WPS: MAC Address (BSSID): " MACSTR, 2473 MAC2STR(bssid)); 2474 } 2475 2476 if (attr.rf_bands) 2477 wpa_printf(MSG_DEBUG, "WPS: RF Bands: %d", *attr.rf_bands); 2478 2479 if (attr.ap_channel) { 2480 u16 chan = WPA_GET_BE16(attr.ap_channel); 2481 2482 wpa_printf(MSG_DEBUG, "WPS: AP Channel: %d", chan); 2483 2484 if (chan >= 1 && chan <= 13 && 2485 (attr.rf_bands == NULL || *attr.rf_bands & WPS_RF_24GHZ)) 2486 freq = 2407 + 5 * chan; 2487 else if (chan == 14 && 2488 (attr.rf_bands == NULL || 2489 *attr.rf_bands & WPS_RF_24GHZ)) 2490 freq = 2484; 2491 else if (chan >= 30 && 2492 (attr.rf_bands == NULL || 2493 *attr.rf_bands & WPS_RF_50GHZ)) 2494 freq = 5000 + 5 * chan; 2495 2496 if (freq) { 2497 wpa_printf(MSG_DEBUG, 2498 "WPS: AP indicated channel %u -> %u MHz", 2499 chan, freq); 2500 } 2501 } 2502 2503 wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password", 2504 attr.oob_dev_password, attr.oob_dev_password_len); 2505 dev_pw_id = WPA_GET_BE16(attr.oob_dev_password + 2506 WPS_OOB_PUBKEY_HASH_LEN); 2507 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) { 2508 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID " 2509 "%u in Wi-Fi Handover Select Message", dev_pw_id); 2510 ret = -1; 2511 goto out; 2512 } 2513 wpa_hexdump(MSG_DEBUG, "WPS: AP Public Key hash", 2514 attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN); 2515 2516 ret = wpas_wps_start_nfc(wpa_s, NULL, bssid, NULL, dev_pw_id, 0, 2517 attr.oob_dev_password, 2518 attr.ssid, attr.ssid_len, freq); 2519 2520 out: 2521 wpabuf_free(wps); 2522 return ret; 2523 } 2524 2525 2526 int wpas_wps_nfc_report_handover(struct wpa_supplicant *wpa_s, 2527 const struct wpabuf *req, 2528 const struct wpabuf *sel) 2529 { 2530 wpa_printf(MSG_DEBUG, "NFC: WPS connection handover reported"); 2531 wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in request", req); 2532 wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in select", sel); 2533 return wpas_wps_nfc_rx_handover_sel(wpa_s, sel); 2534 } 2535 2536 2537 int wpas_er_wps_nfc_report_handover(struct wpa_supplicant *wpa_s, 2538 const struct wpabuf *req, 2539 const struct wpabuf *sel) 2540 { 2541 struct wpabuf *wps; 2542 int ret = -1; 2543 u16 wsc_len; 2544 const u8 *pos; 2545 struct wpabuf msg; 2546 struct wps_parse_attr attr; 2547 u16 dev_pw_id; 2548 2549 /* 2550 * Enrollee/station is always initiator of the NFC connection handover, 2551 * so use the request message here to find Enrollee public key hash. 2552 */ 2553 wps = ndef_parse_wifi(req); 2554 if (wps == NULL) 2555 return -1; 2556 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc " 2557 "payload from NFC connection handover"); 2558 wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps); 2559 if (wpabuf_len(wps) < 2) { 2560 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request " 2561 "Message"); 2562 goto out; 2563 } 2564 pos = wpabuf_head(wps); 2565 wsc_len = WPA_GET_BE16(pos); 2566 if (wsc_len > wpabuf_len(wps) - 2) { 2567 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) " 2568 "in rt Wi-Fi Handover Request Message", wsc_len); 2569 goto out; 2570 } 2571 pos += 2; 2572 2573 wpa_hexdump(MSG_DEBUG, 2574 "WPS: WSC attributes in Wi-Fi Handover Request Message", 2575 pos, wsc_len); 2576 if (wsc_len < wpabuf_len(wps) - 2) { 2577 wpa_hexdump(MSG_DEBUG, 2578 "WPS: Ignore extra data after WSC attributes", 2579 pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len); 2580 } 2581 2582 wpabuf_set(&msg, pos, wsc_len); 2583 ret = wps_parse_msg(&msg, &attr); 2584 if (ret < 0) { 2585 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in " 2586 "Wi-Fi Handover Request Message"); 2587 goto out; 2588 } 2589 2590 if (attr.oob_dev_password == NULL || 2591 attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) { 2592 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password " 2593 "included in Wi-Fi Handover Request Message"); 2594 ret = -1; 2595 goto out; 2596 } 2597 2598 if (attr.uuid_e == NULL) { 2599 wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi " 2600 "Handover Request Message"); 2601 ret = -1; 2602 goto out; 2603 } 2604 2605 wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN); 2606 2607 wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password", 2608 attr.oob_dev_password, attr.oob_dev_password_len); 2609 dev_pw_id = WPA_GET_BE16(attr.oob_dev_password + 2610 WPS_OOB_PUBKEY_HASH_LEN); 2611 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) { 2612 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID " 2613 "%u in Wi-Fi Handover Request Message", dev_pw_id); 2614 ret = -1; 2615 goto out; 2616 } 2617 wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash", 2618 attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN); 2619 2620 ret = wps_registrar_add_nfc_pw_token(wpa_s->wps->registrar, 2621 attr.oob_dev_password, 2622 DEV_PW_NFC_CONNECTION_HANDOVER, 2623 NULL, 0, 1); 2624 2625 out: 2626 wpabuf_free(wps); 2627 return ret; 2628 } 2629 2630 #endif /* CONFIG_WPS_NFC */ 2631 2632 2633 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s) 2634 { 2635 size_t i; 2636 struct os_reltime now; 2637 2638 if (wpa_debug_level > MSG_DEBUG) 2639 return; 2640 2641 if (wpa_s->wps_ap == NULL) 2642 return; 2643 2644 os_get_reltime(&now); 2645 2646 for (i = 0; i < wpa_s->num_wps_ap; i++) { 2647 struct wps_ap_info *ap = &wpa_s->wps_ap[i]; 2648 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid); 2649 2650 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d " 2651 "tries=%d last_attempt=%d sec ago blacklist=%d", 2652 (int) i, MAC2STR(ap->bssid), ap->type, ap->tries, 2653 ap->last_attempt.sec > 0 ? 2654 (int) now.sec - (int) ap->last_attempt.sec : -1, 2655 e ? e->count : 0); 2656 } 2657 } 2658 2659 2660 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s, 2661 const u8 *bssid) 2662 { 2663 size_t i; 2664 2665 if (wpa_s->wps_ap == NULL) 2666 return NULL; 2667 2668 for (i = 0; i < wpa_s->num_wps_ap; i++) { 2669 struct wps_ap_info *ap = &wpa_s->wps_ap[i]; 2670 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0) 2671 return ap; 2672 } 2673 2674 return NULL; 2675 } 2676 2677 2678 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s, 2679 struct wpa_scan_res *res) 2680 { 2681 struct wpabuf *wps; 2682 enum wps_ap_info_type type; 2683 struct wps_ap_info *ap; 2684 int r; 2685 2686 if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL) 2687 return; 2688 2689 wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE); 2690 if (wps == NULL) 2691 return; 2692 2693 r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1); 2694 if (r == 2) 2695 type = WPS_AP_SEL_REG_OUR; 2696 else if (r == 1) 2697 type = WPS_AP_SEL_REG; 2698 else 2699 type = WPS_AP_NOT_SEL_REG; 2700 2701 wpabuf_free(wps); 2702 2703 ap = wpas_wps_get_ap_info(wpa_s, res->bssid); 2704 if (ap) { 2705 if (ap->type != type) { 2706 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR 2707 " changed type %d -> %d", 2708 MAC2STR(res->bssid), ap->type, type); 2709 ap->type = type; 2710 if (type != WPS_AP_NOT_SEL_REG) 2711 wpa_blacklist_del(wpa_s, ap->bssid); 2712 } 2713 return; 2714 } 2715 2716 ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1, 2717 sizeof(struct wps_ap_info)); 2718 if (ap == NULL) 2719 return; 2720 2721 wpa_s->wps_ap = ap; 2722 ap = &wpa_s->wps_ap[wpa_s->num_wps_ap]; 2723 wpa_s->num_wps_ap++; 2724 2725 os_memset(ap, 0, sizeof(*ap)); 2726 os_memcpy(ap->bssid, res->bssid, ETH_ALEN); 2727 ap->type = type; 2728 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added", 2729 MAC2STR(ap->bssid), ap->type); 2730 } 2731 2732 2733 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s, 2734 struct wpa_scan_results *scan_res) 2735 { 2736 size_t i; 2737 2738 for (i = 0; i < scan_res->num; i++) 2739 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]); 2740 2741 wpas_wps_dump_ap_info(wpa_s); 2742 } 2743 2744 2745 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid) 2746 { 2747 struct wps_ap_info *ap; 2748 2749 wpa_s->after_wps = 0; 2750 2751 if (!wpa_s->wps_ap_iter) 2752 return; 2753 ap = wpas_wps_get_ap_info(wpa_s, bssid); 2754 if (ap == NULL) 2755 return; 2756 ap->tries++; 2757 os_get_reltime(&ap->last_attempt); 2758 } 2759
